10/15/2013 10:08 AM PDT

The man who raised Adrian Peterson's 2-year-old son says he's sick and tired of people feeling sorry for the NFL star, claiming AP didn't care about the boy because he never got the chance to meet him.

We broke the story, AP only learned he was the biological dad a few months ago. Before the revelation, the child's mother was under the impression that the father was a man named Bobby Ruffin.

After the child passed away on Friday, Bobby went to his Facebook page and unloaded ... writing, "So tired of this poor Adrian Peterson sh*t. Let me blow all your minds. The boy who died was my son."

"Yes A.P. he was the biological father but I raised him and he carried my name. Tyrese Robert Ruffin. I don’t blame AP for not really caring cuz him and I both found out recently who the biological father was."

“AP met my son for the first time yest when my son was already in coma. I was here today when we pulled the plug, not him. He was happily practicing and has no problem playing on Sunday."

"So yea this isn’t all out yet but I’m sick of the poor AP sh*t. He didn’t know or even meet my son. Sorry for the outburst but put yourself in my place.”